conj.

1. 但是
   It is hot in summer here, but it is not cold in winter.

   这里夏天热，但冬天不冷。

2. （通常用not ... but ...）而是
   Our purpose is not to do it for you but to teach you to do it by yourself.

   我们的目的不是替你做这事，而是教会你自己来做。

3. 可是，然而
   She looks very young, but she is already in her 30's.

   她看上去很年轻，可是她已三十多岁了。

4. （表示惊讶、不同意等）喔，哇
   Heavens, but it snows.

   天哪，真的下雪了。

5. （用来加强语句重复部分的语气）一定
   We will be here on time. But on time.

   我们将准时到达这里，一定准时。

6. （用来引入新话题）那就
   But now to the last question.

   现在就来谈最后一个问题吧。

7. （常用于否定句）而不；若不
   But that I saw it, I wouldn't have believed it.

   若不是亲眼目睹，我还不会相信呢。

   It's not so high but we can jump it.

   它并非高到我们跳不过去的地步。

8. （用于含doubt, question等字的否定句中，相当于that）对于
   There is no doubt but he won.

   对于他获胜这一点没有疑问。

prep.

1. （用于nothing, nobody, who, all等词后面）除……以外
   No one saw it but me.

   除了我没有人看到。

   Dick seldom talks of anything but music.

   迪克很少谈及音乐以外的事情。

ad.

1. 只，仅仅，才
   It took her but a few days to learn it.

   只不过几天时间她就学会了。

2. 【美】【俚】（用来加强语气）肯定地，绝对地
   Go there but fast!

   赶快到那儿去！

pron.

1. （关系代词，相当于who ... not, which ... not）没有……不
   Not a man but felt it.

   没有人不感觉到它。

n.

1. 用“但是”来表示反对；异议[C]
   Not so many buts, please.

   请别老是反对个没完。

conj.

1. used to introduce a phrase or clause contrasting with what has come before or with what is expected.
2. [with neg. or in questions] other than; otherwise than.
3. [with neg.] archaic without it being the case that.

prep.

adv.

1. only.
2. Austral./NZ & Scottish informal though; however:
   he was a nice bloke but.

n.

n.